HP C4780 stopped scanning documents to pdf

[taysons]

My HP C4780 has stopped scanning documents to PDF. The default profile is changed to JPEG etc. I need to change it to scan to  PDF. I have deleted the software from my desktop and loaded it several times. Using Window 7, 64 bits. [Personal Information Removed]

[sandytechy20]

@taysons

Welcome to the HP support community.

I understand that you are unable to scan and save the document as a PDF, this seems to be a driver issue.

Did you uninstall the printer driver from the root level before installing the new driver?

If not, follow these steps to fix the issue.

Perform root level uninstallation to remove all the printer-related software.

• In Windows, search for and open Programs and Features.
• Select your HP printer.
• Select Uninstall.
• In Windows, search for and open Devices and Printers.
• In the Devices and Printers window look for your HP Printer. If you see it listed, right-click on it and choose "Delete" or "Remove Device.”
• Open up the run command with the "Windows Key + R" key combo.
• Type printui.exe /s and click OK.
• Click on Drivers tab.
• Look for HP Printer driver. If you see it click on it and click Remove at the bottom.
• Select OK.
• Remove all instances of the same.
• Select Apply and OK on the Print Server Properties windows.
• Close Devices and Printers. 
• Restart the PC again.

Download and install printer full feature driver

Click here to download the driver

Let me know how it goes.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.